汽车轮毂轴承内圈感应回火温度均匀性的数值模拟  

Numerical simulation of temperature uniformity of hub bearing inner ring during induction tempering process

作　　者：魏文婷 赵天翼 柯锦哲 刘青龙 Wei Wenting;Zhao Tianyi;Ke Jinzhe;Liu Qinglong(School of Automotive Engineering,Wuhan University of Technology,Wuhan Hubei 430070,China;Key Laboratory of Modern Automotive Parts Technology of Hubei Province,Wuhan Hubei 430070,China;Collaborative Innovation Center of Automotive Parts Technology of Hubei Province,Wuhan Hubei 430070,China)

机构地区：[1]武汉理工大学汽车工程学院,湖北武汉430070 [2]现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [3]汽车零部件技术湖北省协同创新中心,湖北武汉430070

出　　处：《金属热处理》2023年第5期129-137,共9页Heat Treatment of Metals

基　　金：国家自然科学基金青年科学基金(51605355);湖北省自然科学基金面上项目(2022CFB378)。

摘　　要：采用电磁场与温度场耦合计算仿真模型,研究感应加热工艺参数对异形截面汽车轮毂轴承内圈回火温度场的影响规律,并采用响应曲面法分析感应回火工艺参数的交互影响作用。结果表明,随着感应线圈的频率和电流密度降低,轴承内圈心部与表层温度差缩小,整体升温速率降低;依据对温度差和升温速率的影响显著性程度从大到小对感应加热工艺参数排序依次是:电流密度、频率与空气间隙;基于响应曲面法得到的温度均匀性较优的感应回火工艺参数:频率10 kHz,电流密度19.6×10^(6)A/m^(2),外侧感应线圈与零件之间的空气间隙8.5 mm,并通过试验验证了温度场数值模拟的有效性;基于回火参数相当的等温回火与感应回火试验,发现两种工艺获得的硬度相近。Coupling calculation simulation model of electromagnetic field and temperature field was used to study the influence of induction heating process parameters on tempering temperature field of inner ring of the special-shaped automobile wheel hub bearing,and the interaction of the induction tempering process parameters was analyzed by using the response surface methodology.The results show that as the frequency and current density of the induction coil decrease,the temperature difference between the core and the surface of the bearing inner ring decreases,and the overall heating rate decreases.According to the significance of the influence on temperature difference and heating rate,the order of induction heating process parameters is current density,frequency,and air gap.Induction tempering process parameters with better temperature uniformity obtained based on response surface method are the frequency of 10 kHz,the current density of 19.6×10^(6)A/m^(2),the air gap between the outer induction coil and the parts of 8.5 mm,and the effectiveness of temperature field numerical simulation is verified through experiments.With equivalent tempering parameters,isothermal tempering and induction tempering experiments find that the hardness obtained by the two processes is similar.

关 键 词：汽车轮毂轴承 感应回火 温度均匀性 数值模拟 响应曲面法 

分 类 号：TG156.5[金属学及工艺—热处理] U463.343[金属学及工艺—金属学]